Steam-actuated valve



(No Model.) 2 Sheets-Sheet 1. W. L. G. WILLIAMS.

' STEAM AGTUATED VALVE.

No. 411,234. Patented Sept. 17, 1889.

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\ ATTORNEYS.

N. PETERS. Pbolo-Lhbogrzplwr. Waifimgton, D. (l

2 Sheets-Sheet 2.

S M m L H W G L W (No Modem STEAM AGTUATED VALVE.

Patented Sept. 1'7, 1889.

ATTORNEYS.

UNITED STATES PATENT OFFICE.

\VILLIAM LLOYD GIBBON WILLIAMS, OF JERMYN, PENNSYLVANIA.

STEAM-ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 411,234, datedSeptember 17, 1889.

Application filed December 12 1888- Serial No. 293,345. (No model.)

To all whom it may concern:

Be it known that I, \VILLIAM LLOYD GIB- BON WILLIAMS, of Jermyn, in thecounty of Lackawanna and State of Pennsylvania, have invented a new anduseful Improvement in Steam-Actuated Valves, of which the following is afull, clear, and exact description.

The invention relates to automatic valves for steam-engines,steam-pumps, &c.; and the object of the invention is to provide a newand improved valve which is simple and durable in construction, veryeffective in operation, reducing the friction to a minimum, anddispensing with all outside mechanisms for opcrating the valve.

The invention consists of certain parts and details and combinations ofthe same, as will be hereinafter fully described, and then point ed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional end elevation of the improvement on the line 00w of Fig. 2. Fig. 2 is a sectional side elevation of the improvement onthe line y g of Fig. 1. Fig. 3 is a plan view of the improvement withthe steamchest in section. Fig. 4 is a sectional plan view of theimprovement on the line .2 .2 of Fig. 1, and Fig. 5 is an inverted planview of the main valve.

In the cylinder A operates, in the usual manner, the piston B, connectedby the pistonrod 0 with suitable mechanism to be driven. On top ofthecylinder A. is formed a steamchest D, into which leads a steam-inletpipe E, connected with a suitable source of steam-supply. In thesteam-chest D is mounted the main valve F to turn, provided with thearms F and F placed diametrically opposite each other and recessed ontheir under sides.

From the steam-chest D lead the stea1ninlet ports a. and b to the endsof the cylinder A, and the exhaust-ports c and (I, placed alongside theports a and b, respectively, lead to an exhaust-channel 6, connectedwith the em haust-pipe G. The cavities in the under sides of the arms Fand F are so arranged. as to connect the ports a c and b (I, respectively, with each, or to disconnect the said the said piston H in placewhen sliding forward and backward in the cylinder I. The pin H, beforereferred to, passes through a slot D in the bottom of the steam-chest D,as is plainly shown in Fig. 3.

From the ends of the cylinder I lead the ports f and 9 into a cylinder.I located below the cylinder I and in line with the same. In thiscylinder J is held to slide longitudinally a second auxiliary piston K,provided with a pin K extending through a longitudinal slot in thecylinder J and serving to hold the piston K from turning when movingforward or backward in the cylinder J. Alongside the ports f and g arearranged the ports f and g, respectively, also leading from the cylinderI to the cylinder J. The ports f f and g g are adapted to register withthe ports h and 2 formed in the piston K, and arranged in such a mannerthat when the port h registers with the port f, as shown. in Fig. 2, theport t' registers with the port g,'while the ports f and g aredisconnected. The ports 7L and t' are also adapted to register with theports 7c and n and the ports Z and 0, respectively, of which the portsTo Z lead from the cylinder J into the cylinder A, while the ports a and0 connect with the exhaust channel 6-, as is plainly shown in Fig. l.From the ends of the cylinder .I also lead the ports 19 and q into theends of the cylinder A.

The operation is as follows: \Vhen the machine is in the position shownin the drawings, the live steam entering through the pipe E passes intothe steam-chest D, and from the latter through the open port 1) into therighthand end of the cylinder A. The piston B is thus propelled in thedirection of the arrow a, and when it nearly reaches the end of itsstroke it uncovers the port 70, so that the steam in the cylinder A can.pass through the port 70, the port 71 in the second auxiliary piston Kinto the port f, and from the latter into the left-hand end of thecylinder I, thereby forcing the auxiliary piston H in the direction ofthe arrow Z), whereby the pin II of the said piston, acting on the arm Fof the main valve F, turns the latter in the direction of the arrow 0,so that the port a, is uncovered and disconnected from the exhaust-port0, While the inlet-port b is covered and connected with the exhaust cl.The live steam now passes through the port a into the left-hand end ofthe cylinder A, so that the piston B is propelled in the inversedirection of the arrow ct',whereby the port 19 is uncovered and livesteam rushes through the port 1) into the left-hand end of the cylinderJ, whereby the second auxiliary piston K is moved to the right in thedirection of the arrow Z), so that the port 77. is disconnected from theports f and 7c and co'nnects the ports f and n with each other. At thesame time the port 1' disconnects the ports g and 0 and connects theports g and Z with each other. The exhaust-steam in front of the pistonB passes through the port I) and the cavity in the arm F into theexhaust-port cl, and from the latter through the channel 6 into theexhaust-pipe G. WVhen the piston B, traveling in the inverse directionof the arrow at, nears the end of its stroke, it uncovers the port Z, sothat the live steam passes through the said. port Z to the port t andthe port g into the right-hand end of the cylinder I, so that the firstauxiliary piston II is shifted to the left in the inverse direction ofthe arrow 1), whereby the pin 11 again moves the arm F of the main valveF into its former position, as illustrated in Fig. 3. The engine isagain reversed as above described. The exhaust from the ends of thecylinder I takes place through the respective ports f and g, connectedby the ports hand 01, respectively, with the ports n and 0, leading tothe channel 6, as illustrated in Fig. 41-, and above described. Theexhaust from the cylinder J takesplace through the respective ports qand19. Thus it will be seen that by the peculiar arrangement of theauxiliary piston II with the main valve F the latter is automaticallychanged so as to reverse the movement of the piston B whenever it comesto the end of its stroke.

1. In a steam-actuated valve, the combination, with a cylinder and itspiston, of a steamchest communicating with the cylinder, an oscillatingvalve in the steam-chest, and an auxiliary piston below the steam-chestand connected with the said valve, the said auxiliary piston beingoperated by live steam from the cylinder, substantially as described.

2. In a steam-actuated valve, the combination, with a main valve mountedto turn and provided with an arm, of an auxiliary piston operated bylive steam from the cylinder and provided with a pin engaging the saidvalvearm, substantially as shown and described.

3. In a steam-actuated valve, the combination, with a main valve mountedto turn and provided with an arm, of an auxiliary piston operated bylive steam from the cylinder and provided with a pin engaging the saidvalvearm, and a second auxiliary piston actuated by live steam andcontrolling the motion of the said first auxiliary piston, substantiallyas shown and described.

4. In a steam-actuated valve, the combination, with a cylinder and apiston operating therein, of a steam-chest provided with inlet andoutlet ports, the former leading to the said cylinder, a valve mountedto turn in the said steam-chest and operating over the said ports, anauxiliary piston connected with the said main valve for turning thesame, and an auxiliary cylinder controlling the said auxiliary pistonand in communication with the said cylinder, substantially as shown anddescribed.

5. In a steam-actuated valve, the combination, with a cylinder and apiston operating therein, of a steam-chest provided with inlet andoutlet ports, the former leading to the said cylinder, a valve mountedto turn in the said steam-chest and operating over the said ports, anauxiliary piston connected with the said main valve for turning thesame, an auxiliary cylinder containing the said auxiliary piston, asecond auxiliary cylinder held parallel with the said first-namedauxiliary cylinder and connected with the same by inlet and outletports, and also connected by ports with the main cylinder, and a secondauxiliary piston held to slide in the said auxiliary cylinder andprovided with ports for connecting the said exhaust and inlet ports ofthe second auxiliary cylinder with the said main cylinder and with themain exhaust-ports,

substantially as shown and described.

WILLIAM LLOYD GIBBON WILLIAMS. Witnesses:

JOHN D. SHERER, WM. S. HUTOHINS.

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